53777667021 has 8 divisors (see below), whose sum is σ = 77219214240. Its totient is φ = 33093948912.

The previous prime is 53777667011. The next prime is 53777667037. The reversal of 53777667021 is 12076677735.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53777667021 - 2⁷ = 53777666893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53777667011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689457231 + ... + 689457308.

It is an arithmetic number, because the mean of its divisors is an integer number (9652401780).

Almost surely, 2^53777667021 is an apocalyptic number.

It is an amenable number.

53777667021 is a deficient number, since it is larger than the sum of its proper divisors (23441547219).

53777667021 is a wasteful number, since it uses less digits than its factorization.

53777667021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378914555.

The product of its (nonzero) digits is 2593080, while the sum is 51.

The spelling of 53777667021 in words is "fifty-three billion, seven hundred seventy-seven million, six hundred sixty-seven thousand, twenty-one".